Created attachment 655643 [details] [diff] [review] v1 Not sure why and when I changed "sendAsyncMessage" to "syncAsyncMessage" in bug 776825, or why I missed this -- Marionette tests should've caught this. Probably got introduced in one of the many review/rebase cycles.
https://hg.mozilla.org/mozilla-central/rev/e1b06ed3fc1e This landed after the aurora uplift, unfortunately. You may want to request aurora approval for this patch.
(In reply to Ryan VanderMeulen from comment #3) > This landed after the aurora uplift, unfortunately. You may want to request > aurora approval for this patch. Thanks for letting me know, Ryan. We don't really need the trains yet, so I think this won't be necessary.